Oracle VirtualBox version 4.2.12 was released on 12-Apr-2013 and caused the following problem: VirtualBox Guest Additions 4.2.12 breaks Ubuntu 12.04 guest. The solution of reverting back to GA 4.2.10 allowed the VM to run but I lost the ability to re-size the guest display.
On 21-Jun-2013 version 4.2.14 was released with a fix to this problem.
GA 4.2.14 does not cause graphics problems but it did not resolve the re-size issue for me. The Ubuntu VM starts up okay, but the display would still not re-size when the host (Windows 7 x64) window size was changed.
The solution to this problem was to change /etc/X11/xorg.conf back to its original configuration (this is the complete un-commented file content):
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<strong> Section "Device" Identifier "Configured Video Device" EndSection Section "Monitor" Identifier "Configured Monitor" EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" EndSection</strong> |
The xorg.conf this replaced had device/monitor/screen sections with specific driver details, e.g.:
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Section "Device" Identifier "Configured Video Device" Boardname "vesa" Busid "PCI:0:2:0" Driver "vboxvideo" Screen 0 EndSection |
I've been using this VM for a number of years and I suspect that older versions of the guest additions made this change. Apparently newer GAs no longer require this.
Anyway, if you're having a Ubuntu guest display re-size problem give this a try.
